公开(公告)号：US09664554B2

公开(公告)日：2017-05-30

申请号：US14408574

申请日：2012-12-11

Applicant: NEC Corporation

Inventor： Hideki Kadosawa ,  Tetsuya Yoshinari ,  Shigeki Shinoda ,  Katsumi Abe ,  Yasuhiro Sasaki

IPC: G01H11/08 ,  G08B13/16 ,  G01H11/06

CPC classification number: G01H11/06 ,  G01H11/08 ,  G08B13/1654

Abstract: Provided are a vibration detector and a vibration detecting method, which are power saving, can detect vibration even if the vibration is very weak, and can perform both start-up of the apparatus and collection of data of vibration information by the use of only one sensor. The apparatus includes a vibration detector, a semiconductor switch, a controller and a power supply. The semiconductor switch and the controller are connected to the power supply. The vibration detector detects vibration and consequently generates a vibration voltage. The semiconductor switch includes a voltage divider for generating a bias voltage inside. The semiconductor switch detects a voltage produced by superposing the bias voltage onto the vibration voltage outputted from the vibration detector, and conducts current when the detected voltage is equal to or larger than a certain value. The controller wakes up with the current conducted by the semiconductor switch as a trigger signal.

公开(公告)号：US20150211953A1

公开(公告)日：2015-07-30

申请号：US14430390

申请日：2013-09-06

Applicant: NEC CORPORATION

Inventor： Shigeki Shinoda ,  Tetsuya Yoshinari ,  Shohei Kinoshita ,  Hiromi Yamamoto ,  Masatake Takahashi ,  Yasuhiro Sasaki

IPC: G01M3/16

CPC classification number: G01M3/16 ,  G01M3/243

Abstract: A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.

Abstract translation: 信号获取单元（2020）获取信号。 从信号获取单元（2020）获取的信号中，检测信号提取单元（2060）将作为检测信号的频带的多个部分检测频带中的任何频带的信号提取出来， 检测对象已被划分。 确定单元（2070）按顺序确定与每个不同的部分检测频带相对应的每个检测信号，检测信号是否显示任何泄漏，并且如果至少规定数量的检测信号没有显示任何泄漏 ，确定不会发生泄漏。

公开(公告)号：US20150160071A1

公开(公告)日：2015-06-11

申请号：US14408574

申请日：2012-12-11

Applicant: NEC Corporation

Inventor： Hideki Kadosawa ,  Tetsuya Yoshinari ,  Shigeki Shinoda ,  Katsumi Abe ,  Yasuhiro Sasaki

IPC: G01H11/06

CPC classification number: G01H11/06 ,  G01H11/08 ,  G08B13/1654

Abstract: Provided are a vibration detector and a vibration detecting method, which are power saving, can detect vibration even if the vibration is very weak, and can perform both start-up of the apparatus and collection of data of vibration information by the use of only one sensor. The apparatus includes a vibration detector, a semiconductor switch, a controller and a power supply. The semiconductor switch and the controller are connected to the power supply. The vibration detector detects vibration and consequently generates a vibration voltage. The semiconductor switch includes a voltage divider for generating a bias voltage inside. The semiconductor switch detects a voltage produced by superposing the bias voltage onto the vibration voltage outputted from the vibration detector, and conducts current when the detected voltage is equal to or larger than a certain value. The controller wakes up with the current conducted by the semiconductor switch as a trigger signal.

Abstract translation: 提供了一种节电的振动检测器和振动检测方法，即使振动非常弱也能够检测振动，并且可以通过仅使用一个来执行设备的启动和收集振动信息的数据 传感器。 该装置包括振动检测器，半导体开关，控制器和电源。 半导体开关和控制器连接到电源。 振动检测器检测振动，从而产生振动电压。 半导体开关包括用于在其内部产生偏置电压的分压器。 半导体开关检测通过将偏置电压叠加到从振动检测器输出的振动电压而产生的电压，并且当检测到的电压等于或大于一定值时，传导电流。 控制器用半导体开关传导的电流作为触发信号唤醒。

公开(公告)号：US09739684B2

公开(公告)日：2017-08-22

申请号：US14430390

申请日：2013-09-06

Applicant: NEC Corporation

Inventor： Shigeki Shinoda ,  Tetsuya Yoshinari ,  Shohei Kinoshita ,  Hiromi Yamamoto ,  Masatake Takahashi ,  Yasuhiro Sasaki

IPC: G01M3/16 ,  G01M3/24

CPC classification number: G01M3/16 ,  G01M3/243

Abstract: A signal acquisition unit (2020) acquires a signal. From the signal acquired by the signal acquisition unit (2020), a detection signal extraction unit (2060) extracts, as a detection signal, a signal of any frequency band among a plurality of partial detection frequency bands into which the frequency band that is the subject of detection has been divided. A determination unit (2070) determines, in order, for each detection signal corresponding to each of the different partial detection frequency bands, whether the detection signal shows any leakage, and if at least a prescribed number of the detection signals are not showing any leakage, determines that leakage is not taking place.